Atalaia, near Peralta (Jurassic to of Portugal)

Also known as Portela, Montoito

Where: Centro, Portugal (39.2° N, 9.3° W: paleocoordinates 33.5° N, 1.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Praia da Amoreira-Porto Novo Member (Lourinhã Formation), Late/Upper Kimmeridgian to Late/Upper Kimmeridgian (155.7 - 145.0 Ma)

• orig. Sobral Mb.

•Mateus et al. 2017: includes ostracods pointing to a late Kimmeridgian to early Tithonian age in its middle part (Werner, 1986) and the dinocyst Cribroperidinium granuligerum (Klement) “complex” indicating a mid Kimmeridgian to late Tithonian age for the lower part (Taylor et al., 2013).

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lenticular claystone

• Mateus et al. 2017: The Praia da Amoreiras Mb. was interpreted by Hill (1989) as deposited in the distal mudflat of alluvial fans with both sheetflood and channelized flows shifting on the surface, draining southeastward from the Berlengas basement block; however, Taylor et al. (2013) consider it as deposited by a meandering river system. The Porto Novo Mb. comprises distal deposits of a fluvial meander system grading laterally to tide-influenced upper deltaic deposits with more straight channels, thus including the fluvial–tidal transition zone during limited transgressions.
• "large clay lens"

Size classes: macrofossils, mesofossils

Collected by M. de Matos & P. Carreira de Deus in 1947

Collection methods: quarrying, surface (float), mechanical,

Primary reference: A. F. d. Lapparent and G. Zbyszewski. 1951. Découverte d'une riche faune de Reptiles Dinosauriens dans le Jurassique supérieur du Portugal [Discovery of a rich fauna of dinosaurian reptiles in the Upper Jurassic of Portugal]. Comptes Rendus de l'Académie des Sciences à Paris 233:1125-1127 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 47430: authorized by Matthew Carrano, entered by Matthew Carrano on 24.02.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudinata -
 Loricata -
Crocodylia indet.1 crocodilian
  -
Astrodon pusillus1 Lapparent and Zbyszewski 1957 dinosaur
vertebra
 Theropoda -
Megalosaurus insignis1 Eudes-Deslongchamps and Lennier 1870 theropod
teeth
 Saurischia -
Sauropoda indet.2 Marsh 1878 sauropod
MG 8809, three dorsal vertebra fragments; MG 8792, two dorsal rib fragments
 Saurischia - Brachiosauridae
"Brachiosaurus atalaiensis n. sp." = Lusotitan atalaiensis1
"Brachiosaurus atalaiensis n. sp." = Lusotitan atalaiensis1 Lapparent and Zbyszewski 1957 brachiosaurid
MIGM 4798, 4801–10, 4938, 4944, 4950, 4952, 4958, 4964–66, 4981–82, 4985, 8793–99
Actinopteri
 Lepisosteiformes -
Lepidotes sp.1 Agassiz 1832 gar
scales
unclassified
  -
Tracheophyta indet.1
"fossil wood"